$ git clone -n https://src.fedoraproject.org/rpms/maven-reporting-impl.git /var/lib/mock/f41-build-772559-13506/root/chroot_tmpdir/scmroot/maven-reporting-impl
Cloning into '/var/lib/mock/f41-build-772559-13506/root/chroot_tmpdir/scmroot/maven-reporting-impl'...
$ git fetch origin 92cf16f48dd4b8404c0d7aeacd17091641deff96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-reporting-impl
 * [new ref]         92cf16f48dd4b8404c0d7aeacd17091641deff96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92cf16f Build for JDK 8 at a minimum (rhbz#2266674)